Deflooder for internal-combustion engines.



H. L. THOMPSON. 1 DEFLOODEK FOR INTERNAL COMBUSTION ENGINES. APPLICATION FILED APR- 21. ms.

Patented Jilly 17, 1917.

HERBERT L. THOMPSON, 0F ELGIN, ILLINOIS, ASSIGNOR TO THE MAYTAG COMIPY, 0F NEWTON, IOWA, A CORPORATION 015 IOWA.

'DEFLOODER FOR INTERNAL-COMBUSTION ENGINES. o

Specification of Letters Patent.

Application filed April 27, 1916. Serial No. 93,855.

To all whom it may concern:

Be it known that I, HERBERT L. THOMP- SON, a citizen of the United States, residing at Elgin, in the county of Kane and State of Illinois, have invented certain new and useful Improvements in Deflooders for InternaLCombustion Engines, of which the following is the specification.

This invention relates to internal combus tion engines, and particularly to an apparatus for preventing the flooding of a crank case of a two cycle gasolene engine. As is well known in this class of engines, compression is affected in the crank case, the

. ment.

Fig. 3 is a transverse sectional view of the same on the line 33 of Fig. 2.

In the drawings, 1 represents the fuel base of a 2 cycle gasolene engine, provided with a crank case 2, in which the charge is compressed on each stroke by a'mechanism forming no part of this invention, but well known in-the art. I provide at the lowest "point in the crank casea vertical aperture 3, connecting the crank case with the fuel base. Over the outlet of the aperture 3, I

secure a deflooding attachment comprising a casting 4, bolted to the bottom of the crank case by bolts such as 5, and provided with a collecting chamber 6, at the lowest point of which is a passage 7 leading downwardly and then upwardly as at 8, to an outlet point 9 near the bottom of the crank case and substantially above the highest point to which the base 1 can be filled with fuel. In the chamber 6 is a float 10 provided with a needle valve 11, operating in the aperture 7.

The operation of the device is as follows:

Any fuel collecting in the crank case will drop down through the aperture 3 into the chamber 6. As soon as sufficient fuel has collected in chamber 6 to. raise float 10 the compression. in the crank case will immediately blow this fuel out through passage 7 into the fuel base. This absolutely prevents the collection in the crank case of fuel sufficient at any time to flood the same.

Claims: I

1. An attachment for internal combustion engines, comprising a crank case, an automatically. operable draining device adapted to drain fuel from the crank case thereof.

2. In an internal combustion engine, a crank case and draining device adapted to drain fuel therefrom, comprising a non-return valve adapted to prevent loss of compression in the crank case.

3. In apparatus of the class described, a crank case, a passageway at substantially the lowest part thereof, leading from the when fuel has accumulated in said chamber sufficiently to raise said float valve it will gedblown out by compression into the fuel 4. In apparatus of the classdescribed, a

' crank case, an outlet opening at the lowest point thereof, a casing covering said outlet opening, comprising a chamber in communication with a passageway leading downwardly therefrom and then upwardly to a point substantially above the bottom of said chamber, a check valve in said chamber controlled by a float and adapted to close said passageway unless said float is raised by liquid in said chamber, whereby when liquid has drained from said crank case into said chamber sufliciently to raise said float, the liquid will be blown out of said chamber by compression in said crank case.

5. An attachment for internal combustion engines, comprising a casing having a chamber therein adapted to drain fuel oil from the crank case, a float in said chamber, a passageway controlled by said float, said casing being adapted to be secured upon a drain opening in the crank case of an engine.

6. In an internal combustion engine, a

Patented July It, 191W.

fuel bed, means tolimit the height of the liquid therein, a crank case mounted on said fuel bed, a drain opening communicating from said crank case to said fuel bed, an

5 attachment .in said fuel bed and covering said drain opening, a chamber in said attachment, a passageway leading from said chamber into said fuel bed, the point of outlet from said passageway into said fuel 10' bed being substantially above the highest fuel level in said fuel bed, and a float valve in said chamber controlling said passageway substantially as described.

1,2as,eae

HERBERT L'. THOMPSON.

Witnesses:

- W. I. SPARKS, J.-I. Lovnnmon. 

